我实际上正在尝试how to annotate heatmap with text in matplotlib?中提供的解决方案。虽然这实际上适用于数字;我一直试图用unicode文本做同样的事情,问题是,虽然简单的文字打印得很好,但更奇特的文本(如希腊语)不是。我尝试使用一堆编解码器('utf-8-sig','cp737','cp1252'等)进行编码和解码,但问题仍然存在。有任何想法吗?我正在使用windows7和python 3.3。 使用以下代码将重现该问题。
# -*- coding: utf-8 -*-
import matplotlib.pyplot as plt
import numpy as np
fig5, ax5a = plt.subplots()
data = np.random.rand(5, 4)
heatmap = ax5a.pcolor(data,cmap=plt.cm.Blues)
commUrlCategoryHeatmap = {0: {0: 'νεα',1: 'news',2: 'νεα',3: 'news',4: 'νεα'},
1: {0: 'news',1: 'νεα',2: 'news',3: 'νεα',4: 'νεα'},
2: {0: 'news',1: 'νεα',2: 'Ειδήσεις και ΜΜΕ',3: 'νεα',4: 'news'},
3: {0: 'νεα',1: 'νεα',2: 'news',3: 'Periódicos',4: 'Ειδήσεις και ΜΜΕ'},
4: {0: 'νεα',1: 'news',2: 'νεα',3: 'news',4: 'Ειδήσεις και ΜΜΕ'}}
for y in range(data.shape[0]):
for x in range(data.shape[1]):
print(commUrlCategoryHeatmap[y][x].encode('utf-8').decode('utf-8-sig'))
plt.text(x + 0.5, y + 0.5, commUrlCategoryHeatmap[y][x].encode('utf-8').decode('utf-8-sig') ,horizontalalignment='center',verticalalignment='center',fontsize = 10, rotation = 35)
plt.colorbar(heatmap)
plt.show()
答案 0 :(得分:4)
您可以在$ sign之间放置文字以使用TeX
呈现文字,请参阅此链接以获取一些背景信息:http://matplotlib.org/users/mathtext.html
修改绘制文本的行:
plt.text(x + 0.5, y + 0.5, '$%s$' % commUrlCategoryHeatmap[y][x],
ha='center',va='center',fontsize=16, rotation=35)
这给了我这个结果: